Shuttle spring



Dec. 6, 1932.

F. E. DOUGLAS SHUTTLE SPRING Filed Feb. 9, 1932 WITNESS.

C1. INTON S. Cosme/v.

l N V EN TOR. fizsae/c .5. Dau GLAS.

BYMZM A TTORNE Y.

". been devised. However,

vised, such prior devices have been sub ect.

.45 proceeds. V 1 A 1 Referring to the drawing, which illustrates t Patented Dec. 6, 1932 ranmuc E. DOUGLAS, or IHOPEDALE, MASSACHUSETTS, ssre von 'ronnArna'conronA- rioiv; OF'HOPEDALE, MASSACHUSETTS, AcoRroaA'rIoN'or MAINE 1 1 snnm'rLE spams I Application'flledlfebruary a, 1932. s rial No. 591,849. 1

This invention relates to loom shuttles of the type adapted for automatic replenish; ment of the fillingsupply andhas more particular reference to the means in such a shut.-

( tle for holding the filling carrier. v

Shuttles of the aforementioned type usually include a pair of opposedbobbin gripping jaws for gripping the butt of the bobbin, and a socalled spring cover, which may be comf bined with a downwardly and inwardly inclined guide for positioning the incoming bobbin longitudinally of the shuttle during the replenishing operation. rangements of these parts have heretofore insofar as I am adto the disadvantages that the spring breakage is excessive and that the parts loosen in the shuttle body.

It is, accordingly, the principal object of my invention to provide a shuttle having a bobbin supporting spring located in a cavity in one end thereof, and a cover member for the spring, wherein the parts are rigidly 5 secured together and wherein the bobbin gripping jaws of the spring are free from any clamping action of the securing means and are consequently less liable to break under the stresses incident to replenishment 3 of the filling supply.

A further object of myinvention is to provide a one-piece shuttle spring comprised of opposed bobbin gripping jaws joined at their outerends by an integral flat portion from the opposite edges of which extend tongues by which the spring may be secured in a shuttle body, one of the tongues also serving to support the jaws and preventing them 1 from mutilating the shuttle body therebeneath.

Other objects of my invention will, in part,

be hereinafter more specifically enumerated or will become apparent as the description the preferred embodiment of my invention: F1 1 is a fragmentary plan View of a shutt e embodying my invention: 1

Various ar-.

improved shuttle spring and spring respectively.

' As shown more particularly in Figs. 1 and of the shut- 2, the'shuttle, whichis of conventional out line, includes a .body 1, preferably of wood, having an opening '2 forthe; reception of a filling carrier, or bobbin, 3. ,The-buttof the bobbin is provided with: metalrings 4 adapt- 'e'd-to be received'in grooves 5 inthe contiguous faces of the opposed bobbin gripping jaws- 6 of the bobbin supporting spring. j lhe bobbin supporting spring is, as shown, "located in *an'upwardlyfop'ening cavity in one e nd'of the shuttle body,whic.hj,cavity communicates with opening 2. 'The cavity is sum-canny large that its walls do not interfere with the free movement of the jaws :6

during the replenishing operation. The jaws 6 are free at their inner ends, i. e. the endsclosest tothe opening 2 in the shuttle body, and are joined together att-heir out-e er ends by-a. flat portion 8 extending transversely ofthe jaws. A flat tongue 9,1in-,

from the upper edge of said'portion and is apertured at 10" for the reception of, a. bolt or equivalent fastening means 11, the tongue tion, beneath the jaws.

port, or bearing member, for the j aws-.6,' pre- "ventingfthe latter from mutilatingthe ledge "13 of the shuttlebody should the impact in- "cidentto" replenishment of the filling supply tend to spring the "jaws downward against x-said' ledge f "lhetongue' 12 overlies-the ledge "13" and 1s apertured'iasgat ll'fo'rtheieceP- tegral with the portion'8, extends outwardly.

tioni'ofa fastening. means such as bolt'15.

Asis above indicated, all of the parts of the spring arev integrally formed from-one piece of metal. While it is;.not absolutely essential that-the springbeso formedsuch 5 Fig. 2 is a sectional elevation on a plane jconst'ructionis, nevertheless,-;to be preferred,

."Aside frorn the convenience of being'able to r springs-are commonly subjected,

stamp the entire spring inone piece, the integral'construction also eliminates joints and seams that areliable to break under the severe repeated stresses to which shuttle Theco'inbined spring cover "and 'bdbb'i'n guide is conveniently formed it a sin'gles'trip of metal, rhav ing =one-end =16 in contact with ear 9 andthe other end 17 in-contact with 'bedd ed iiito the lower surface of the shuttle i body. The bolt- 1 5 preferably:passesupward 1y ithroiigh a spring washer 22, theledgel 7 ear and the'end 1 7v of the cover and-is J replenishment iseliininated. jHavingtullyldisclosed the upper face of the end 17.

FIQA shuttle .includingjabody bobbin supporting spring located inya "cavity in one-endthereof, said'sprijng i'neudngaii v itegral'ly joined bobbin .gripping aws, ;-a tongue extending outwardly firom one edgeof means 'it'or ftlebody,

V '2. A shuttle v threadedintoa nut 23 which, in the present instance is soldered or 'otherwiseyfixed to the Since thebolts 11 and: I5 are spaced "apart 7 axially of the shuttle "a, greater" distance than from the other edge of the junction of the jaws, and overlying a portion of the'shuttle body; a combined spring cover and bobbin guide having one end'in contact with eachof the said tongues, and means including Spring in theshuttle body; q 7 one piec e shuttle spring coinprlsed of opposed bobbin 'gripping jaws oinedby a jfiatgportion extending transversely of the 70 1 bolts eahgofwhic'h passesyertically through I .o'ne'e'nd'o'f thecover, one-of said tonguesand the shuttle body for securing the cover and jaws, afiat tongue extendingoutwardly from the upper edgeofithesaidportion and a jaw supporting tongue extending from the lower edge of said poi-non inwardly-beneath the reception of fastening devices for securing thespringin ashiittlefbody. YFREDRIQfEJDOUGI-JK S.--

is ordinarily possible theyserve tomore efl v fectivelyhold the spring against loosening either 'fro nfjthe impact of replenishment or fromthestr'esses imparted by the relatively e heavy bobbin whenthe shuttle isin operation in a loom. Likewise, since the spring is 12 the jaws of thespring are not laterallyrec gsecuredin the cavity only by ears ,9 and stricted by the clainping -action-"of transverse I v bolts and, consequent1y-,may separate -freely when a fresh bobbinis inserted in the-shuttle and the spent one ejected; whereby the stresses, inthe spring areg'reatly: lessened and jaws, said tongues being apjertured :for {the ies the tendeilcy toburstthe shuttle body during j preferred emi the junctionof the jaws and overlying the the other edgeofthe junction of the jaws, and

overlyinga portion of the shuttle body, and

securing said tongues to --t he-sh-utinone end .thereofysai'd spring includin g' inshuttle body,a secondtongue extending inj s ward1y'toward-the center of the; shuttle from -'includingv a, body "having a 'Vbobbin-supporting springlocated in a cavity r a w tegra1ly zj oined bobbin gripping jaws, a l tongue extending "outwardly from 'o'ne edge- 7 s ofnth'e junction of t'he fja-ws and overlying v the shuttle body, a se'cond tongue extending inwardly towar'd the center of the shuttle Tao 

